Sullivan's Island is home to 2,087 people in South Carolina. Households here earn about 178% more than in South Carolina as a whole. The median age is 52.5, about 14 years above the US median. This is an unusually credentialed place: 84% of adults have a four-year degree. The typical home is worth $2,000,000+, having roughly tripled since 2000. Households take in $192,813 a year at the median, 134% more than the country as a whole.
At a glance
Wealthier
median household income $192,813, above the US median
US median: $82,259
Older
median age 52.5
US median: 38.9
More educated
84% hold a bachelor's degree
US average: 36%
Top-priced homes
median home value $2,000,000+, the Census reporting cap
US median home: $376,019
Unique to this place
What stands out about Sullivan's Island
What changed most since 1990
Median age35.8 → 52.5(+16.7 years)US over the same years: +6.0 years
Adults with a bachelor's degree54.2% → 84.3%(+30.1 pts)US over the same years: +15.3 pts
Homes owned by their occupants73.9% → 85.3%(+11.4 pts)US over the same years: +0.9 pts
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)9.5%(13)
US avg: 26.4%
Gulf War (1990s)24.8%(34)
US avg: 24.3%
Vietnam era35.8%(49)
US avg: 33.1%
Korean War0%(0)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 137 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Sullivan's Island, decade by decade
Sullivan's Island population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
1,621
$124,484
$516,735
54.2%
3.4
2000
1,911
$132,899
$1,087,892
64.7%
5.2
2010
1,791
$146,106
$1,438,572+
77.1%
6.6
2020
1,891
$181,806
$2,297,056
84.7%
15.4
2024
2,087
$192,813
$2,000,000+
84.3%
8.5
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
How many people live in Sullivan's Island, South Carolina?
Sullivan's Island, South Carolina has about 2,087 residents according to the 2024 American Community Survey.
What is the median household income in Sullivan's Island, South Carolina?
The typical household in Sullivan's Island, South Carolina earns about $192,813 a year. Half of households make more than that, and half make less.
Is Sullivan's Island, South Carolina expensive?
In Sullivan's Island, South Carolina, the median home is worth $2,000,000 or more, and the typical rent is about $2,375 a month.
How educated are people in Sullivan's Island, South Carolina?
About 84.3% of adults age 25 and over in Sullivan's Island, South Carolina hold a bachelor's degree or higher.
What is the poverty rate in Sullivan's Island, South Carolina?
About 8.8% of people in Sullivan's Island, South Carolina live below the federal poverty line.
Has Sullivan's Island, South Carolina grown since 1990?
Yes, Sullivan's Island, South Carolina has grown since 1990. The population has added about 466 residents, a change of about 29 percent over that period.
